Combination lock



Dec. 22, 1925'. 1,566,884

R. LAROSA COMBINATION Loox Filed July 5o, 1925 2 sheets-sheet 1 lul/lll "Illu/lll Il llllhlllfll lll' llllllll l @WHW l 70 INVENTOR l ,Zacfa Za/'05a Y A'rroR'NEYs' Dec. 22 1925.

R. LAROSA COMBINATION LOOK 1925 2 Sheets-Sheet 2 Filed July 5o Iiiiiiiiiiiii..iiiiiiiiiiiiiiiiiiiiif iiiiiiiiir z i s i s i i i s INVENTOR Zacca Zar-0 d www- ATTORNEYS Patented Dec. 22, i925.

rsaaeai PATENT OFFICE..

ROCCO LAROSA, OF NE'W YORK, N. Y.

COMBINATION LOCK.

Application tiled JulySO, 1925.

To all whom z'z may concern;

.Be it known that I, Rocco LARosA, a subject ot the King of Italy, and a resident ot' the city oi New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Gombination Lock, of which the following is a full, clear, and exact description.

This invention pertains to locks and has particular relation to permutation or combination locks.

The invention primarily comprehends an improvement in permutation or combination locks, which renders the same more thoroughly eiiicient and eiectual in operation, comparatively simple, but strong and durable in construction, and inexpensive to manufacture.

The invention furthermore contemplates a permutation lock in which means is provided for readily permitting the changing of the combination.

. Vith the above recited and other objects in view, reference is had to the accompanying drawings in Which there is exhibited one example or embodiment of the invention Which is in no Way intended as a limitation upon the scope of the appended claims as it is to be clearly understood that variations and modiiications which properly fall Within the scope of said claims may be resorted to when found expedient.

In the drawings- Figure 'l is a fragmentary sectional plan view taken approximately on the line 1-'1 ,of Fig. (3;

Fig. 2 is a similar view taken approximately on the line 2--2 of Fig. G;

Fig. 3 is an outer side view of the lock1 with parts in section, as indicated on the line 3-3 of Fig. 2;

Fig. 4 is a vertical longitudinal sectional view-taken approximately on the line 4 4 of Fig. 2, illustrating the lockedcondition ot the lock;

Fig. 5 is a similar vien'v illustrating the unlocked condition of the lock;

Fig. 6 is a longitudinal vertical sectional view taken approximately on the line 66 of Fig. l;

Fig. 7 is a transverse section taken approximately on the line 7--7 ot Fig. 6.

serial no. 47,106.

Referring to the drawings by characters of reference, 1() designates a door or other closure7 and 11 the 'frame or jamb upon which the keeper 12 is mounted for receiving the projectible and retractible extremity 13 ot a slidable bolt 1 4, which bolt is -mounted for longitudinal sliding movement Within the casing or housing 15. The opposite end 16 of the bolt extends at all times through the opposite end of the casing or housing 15 and is provided with a manipulating knob or handle 17. The casing or housing 15 is secured or attached to the inner side of the door 10 and the bolt is freely movable by the manipulating knob 17 at all times from within the door to engage or disengage the extremity 13 with the keeper tl'lroughout. The bolt is provided with a pair oi' longi tudinal slots 18, through which the transverse guide stems 19 extend for guiding the bolt in its movement and for limitingl the shitting of the same in opposite directions. The guide stems are Carried by the outer side Wall 20 and are provided at their opposite ends With axially threaded bars 21 to aline with openings in the inner side Wall 22 of the casing. A detent 27 is also carried yby a stud 25 and is engageable in the notches 9.8 in the upper edge of the bolt to hold the same in retracted, partially retracted, or fully projected position.

In order to provide means ior actuating the bolt from the exterior oil the door. a rotary manipulating shank 2i) projects through the door a hollow bearing sleeve, 23() secured to the outer side wall ot the asingand into said casing. The shank El is provided with a reduced extremity 31, upon which a sleeve-like head 32 is keyed and retained against the shoulder 33 by a nut 34. The sleeve-like head is provided with a radial finger 35, which is adapted upon rotation of the shank in one direction. to successively engage the depending projections 36 and 37 to eiiect the projection and retraction of the extremity 13 of the bolt.

In order to provide permutation means for locking the shank against rotation so that the bolt may be locked in a projected locking position or a retracted unlocked condition, a longitudinally slidable locking plate 38 is provided, which is mounted on the loo inner side of the outer side wall 2O of the casing, said plate being shittable between the wall 2O and parallel guide lugs v39. The vplate is further provided with slots through which the guide stems 19 extend. The plate is provided with a laterally offset locking lug 41, which upon the shifting movement of the plate 38 in one direction, effects the engagement of the lug 41 within the keeper opening 42 of the sleeve-like head 32. A spring 43 is mounted on the stud 25 and engages a lug 44 on the locking plat-evfor the purpose ot normally shifting the lockingpiate in a direction to effect the disengagement ot the locking lug y41 Yfrom the keeper opening 42; in order to lock the plate 38 against movement in a direction under the action ot `the spring 43 to effect the release ot the locking 'lug 41 troni the opening 42,

i the said plate is provided with a plurality ot slots 45, each of which is provided at one end with a locking teat 46, vone ot which, designated 4by the reterence character 46, 1s

"adapted to co-operate with the keeper opening 47' in a sleeve 48, which surrounds the shank 29. A portion of the sleeve 48 which `extends beyond the outer side of the door and abuts against thev manipulating knob 49 on the outer end of the shank 29, has keyed A"thereto a collar 50. The remaining teats 46 f are adapted to engage within the peripheral keeper openings 51 in the rotary stems 52, which are arranged 1n parallel longitudinally spaced relation to each other and to the shank 29. The inner ends of the stemsY are v larged heads 56, between which heads and the outer ends oi the bearinv' sleeves, collars 57 are arranged, the said co' lars 57 and the collar 50 being formed on their innerperipheries with a circumterentially spaced series 'of axial grooves 58 capable of selective envga, jement with a radial longitudinal key 59 on the projecting` ends of the stems 52 or lthe sleeve 48. Each of the collars 57 is provided with circumterent'ially spaced indicia :on its outer periphery and with a serrated yportion 6*, to'facilitate turning thereof. The Iinner end of each, stem 52 is provided with an axially threaded bore 63 for receiving a headed screw 64, which removably retains a washer 65 in a. position to engage with the outer face of the inner side wall 22 to prevent outward axial movement of the stems 52. One ot the keeper openings, designated 51a, is of cam shape to engage with its teat 46 upon turning movement of the stem for the purpose of camming and shifting the locking plate 38 against ythe action of the spring '43 in a direction to cause all of the teats 46 and 46s to be disengaged trom their keeper openings, while, at the same time, et- Y V*wall y22, the same being maintained in place by a spring fastener element 67 engageable in a keeper opening 68.

In the operation of the lock, assuming the same to be unlocked vso that the bolt is freely movable by manipulating the knob yf49 on the outside ol the door, to lock the door the knob is manipulated so that the bolt is shot to engage the extremity 13 in the keeper 12. ln this position the keeper opening 42 in the sleeve-like head 32 of the rotary manipulating shank 29 is inthe posi tion illustrated in Fig. 5, whereby said keeper opening is in the path of movement of the locking lug 41. Either the locking sleeve 48 or the locking stems 55, or all ot' said stems and the sleeve, are turned by means of the collars 50 or 57, thereby disposing one or more of the keeper openings 47, 51 or 51a, out of registry with the path of movement ot the teats 46, so that the movement of the plate 38 under the action ot the spring 43 is prevented, as illustrated in Figs. 2 vand 4.

To release the rotary manipulating shank 29 to permit manipulation of the knob 49 to retract'the bolt, the operator must turn the locking sleeve 48 and stems 52, so that the keeper opening 47, keeper opening 512L and the remaining keeper openings 51 are disposed in registry with the path of movement of the teats 46. When all of said keeper openings Vare alined with the teats, the spring 43 will function to yslide the plate in the direction indicated by the arrowin Fig. 4, so that the teats e-nter the keeper openings while the locking` lug 41 is retracted or disengagedV from the keeper opening 42, as illustrated in F ig. 5. The knob 49 and shank 29 are now freely rotatable to effect retraction ot the bolt. When in this position, the locking operation is accomplished by turning the stem 52, which is provided with the vcam notch 51a, so that shifting of the plate 38 against theaction ot the spring is accomplished by the camming action of the notch 51a against its teat 46. This throws the locking lug` 41 into the keeper opening' 42 and the remaining stems 52 and locking sleeve 48 .may be turned tor the purpose ot confusing an iaminitiated operator by dispos ing the keeper openings ont of alinement with the teats.

dien it is desired, the combinaton may be readily changed by removing the cover 66, whereby access is gained to the screws 54 fill and the nut 34. When the screws 6ft are removed, the stems 52 may be drawn outwardly a sufficient distance to disengage the key 59 from the particular groove 58 in the collar 5?, and re-engage with a different groove, after Which the screws and Washers are re-assembled.

From the foregoing it will thus be seen that an improved, comparatively simple, and inexpensive permutation lock has been devised.

What is claimed is: 4

1. In a permutation lock, a casing, a shiftable bolt, a movable manipulating member engageable therewith for effecting shifting movement thereof and having a keeper opening, and a permutation mechanism for locking the member against movement and for releasing the same, comprising a locking plate having a locking lugl and normally shiftable in one direction to disengage the locking lug from the keeper opening in the manipulating member to disengage and unlock said manipulating member for free movement, and a plurality of relatively adjustable devices engag-eable with the locking plate for preventing normal shifting movement thereof to a released position except When relatively adjusted with respect to each other in a predetermined position.

2. In a permutation lock, a casing, a shiftable bolt, a movable manipulating member engageable therewith for effecting shifting movement thereof and having a keeper opening, and a permutation mechanism for locking the member against movement and for releasing the same, comprising a locking plate having a locking lng and normally shiftable in one direction to disengage the locking lug from the keeper opening in the manipulating member to disengage and unlock said manipulating member for free movement, and a plurality of relatively adjustable devices engageable With the locking plate for preventing normal shifting movement thereof to a released position except when relatively adjusted with respect to each other in a predetermined position, said relatively adjustable Ydevices comprising rotator-y elements having keeper openings, teats on the locking plate and eXteriorly disposed manipulating means therefor having indicia in .scribed thereon and indicating means on the casing with Which said indicia are registrable for determining the position of the keeper openings.

3. In a permutation lock, a casing, a longitudinally shiftable bolt mounted therein, manipulating means connected With the bolt and disposed at the inner side of the casing to permit of the free projection of one end of the bolt from and a retraction of the same Within the casing, a spring-pressed detent for holding the bolt from shifting to a projected or retracted position, a rotar;7

i'i'ranipulating shank having a keeper opening at its inner end and having its outer end projecting through the outer side of the casing, an exterior-ly disposed inauipulatin cj knob on the outer end of the shank: inlcr` `shank having a keeper opening at its inner end and projecting through the outer side of the casing, a plurality of parallel longi tudinally spaced stems extending through the outer side of the casing and each having a keeper opening in its inner end, a locking teat on the sliding plate for each of the keeper openings in the stem and sleeve, a spring for shifting the locking plate in a direction to disengage the locking lng from the keeper opening in the shank, whereby to release the shank for retracting the bolt when all of the teats are in alinement with the keeper openings in the stems and sleeve, and indicia on the outer ends of the sleeve and stems for guiding an initiated operator in setting the sleeve and stems to a position to release the lock.

4. In a permutation lock, a casing, a longitudinally shiftable bolt mounted therein, manipulating means connected with the bolt and disposed at the inner side of the casing to permit of the free projection of one end of the bolt from and a retraction of the same Within the casing, a spring-pressed detent for holding the bolt from shifting to a projected or retracted position, rotary manipulating shank having a keeper open ing at its inner end and having its outer end projecting through the outer side of the casing, an exteriorly disposed manipulatingl knob on the outer end of the shank, intercagageable means on the inner end ot' the shank and on the bolt for effecting a shitting of the bolt upon rotation of the shank, and permutation means for lockingl the shank against rotation, consisting of a longitudinally shiftable locking plate Within the casing having a locking lug engageable Within the keeper opening of the shank when shifted in one direction, a sleeve on the shank having a keeper opening at its inner end and projecting through the outer side of the casing, a plurality of parallel longitudinally spaced stems extending through the outer side of the casing and each having a keeper opening in its inner end, a locking teat on the sliding plate for each of the keeper openings in the stein and sleeve` a spring for shifting the locking plate in a direction to disengage the locking lug from the keeper opening in the shank, tintedl operator in setting the sleeve and whereby to release the shank for retrzieting stems in position to release Athe 100k, and the holt when all of the teats are in Llineeireumerentially adjustable means of eon- 10 ment with Jshe keeper openings in the stems nection between the heads and the stems and 5 und sleeve, and an indicia-hearing head on sleeve respectively, whereby to change the the outerends of the sleeve and each stem combination for releasing the lock.

having indicia thereon for guiding en iniv ROCCO LAROSA. 

